EFFECT OF DIFFERENT LEVELS OF NPK FERTILIZER ON GROWTH AND YIELD OF TWO SUMMER SQUASH CULTIVARS
The experiment was conducted under the open field conditions during two consecutive growing seasons. Two Cucurbita pepo summer squash cultivars: Lebanese and Zucchini Grey which are commercially grown in Iraq were chosen for this investigation. Compound fertilizer, NPK /18:18:5/ was added as side dressing in three levels: 0, 500, 1000 kg/ha. A total of six experimental treatments representing all possible combinations were set in a randomized complete block design with three replications. Data were recorded for several growth and yield components characters. The highest estimates for plant height, number of branches and leaves/plant were obtained from plants fertilized with 1000 kg/ha. While, highest total yield, fruit weight and diameter/plant resulted from plants treated with 500 kg/ha.
Al-Mukhtar, F.A., Hummadi, F.M. and Al-Sahaf, F.H. (1988). EFFECT OF DIFFERENT LEVELS OF NPK FERTILIZER ON GROWTH AND YIELD OF TWO SUMMER SQUASH CULTIVARS. Acta Hortic. 220, 253-258